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<script>


// This file has the portion of the test_webgl_renderer_info chrome mochitest
// that has to run as non-chrome to check that this WebGL extension is not exposed to content

// we can't call the chrome Mochitest ok() function ourselves from non-chrome code.
// So we remote it to the chrome test.

function ok(res, msg) {
  // Note we post to ourselves as posting to the chrome code doesn't seem to work here.
  // This works by having the chrome code put an event handler on our own window.
  window.postMessage({ subTestFinished: true, result: res, message: msg }, "*");
}

function messageListener(e) {
  // This is how the chrome test tells us to start running -- we have to wait for this
  // message to avoid running before it's set up its event handler.
  if (e.data.run) {
    var canBeUnprivileged = e.data.canBeUnprivileged;
    run(canBeUnprivileged);
  }
}

window.addEventListener("message", messageListener, true);

function run(canBeUnprivileged) {
  const UNMASKED_VENDOR_WEBGL = 0x9245;
  const UNMASKED_RENDERER_WEBGL = 0x9246;

  var canvas = document.createElement("canvas");
  var gl = canvas.getContext("experimental-webgl");

  ok(!gl.getError(), "getError on newly created WebGL context should return NO_ERROR");

  ok(!gl.getParameter(UNMASKED_VENDOR_WEBGL) && gl.getError() == gl.INVALID_ENUM,
      "Should not be able to query UNMASKED_VENDOR_WEBGL without having enabled the"
      + " WEBGL_debug_renderer_info extension");
  ok(!gl.getParameter(UNMASKED_RENDERER_WEBGL) && gl.getError() == gl.INVALID_ENUM,
      "Should not be able to query UNMASKED_RENDERER_WEBGL without having enabled the"
      + " WEBGL_debug_renderer_info extension");

  var exts = gl.getSupportedExtensions();
  if (canBeUnprivileged) {
    ok(exts.indexOf("WEBGL_debug_renderer_info") != -1,
       "WEBGL_debug_renderer_info should be listed by getSupportedExtensions in"
       + " non-chrome contexts on non-RELEASE_OR_BETAs");

    var ext = gl.getExtension("WEBGL_debug_renderer_info");
    ok(!!ext,
       "WEBGL_debug_renderer_info should be available through getExtension in non-chrome"
       + " contexts on non-RELEASE_OR_BETAs");

    ok(gl.getParameter(UNMASKED_VENDOR_WEBGL) && gl.getError() == gl.NO_ERROR,
       "Should be able to query UNMASKED_VENDOR_WEBGL if enabling"
       + " WEBGL_debug_renderer_info succeeded");
    ok(gl.getParameter(UNMASKED_RENDERER_WEBGL) && gl.getError() == gl.NO_ERROR,
       "Should be able to query UNMASKED_RENDERER_WEBGL if enabling"
       + " WEBGL_debug_renderer_info succeeded");
  } else {
    ok(exts.indexOf("WEBGL_debug_renderer_info") == -1,
       "WEBGL_debug_renderer_info should not be listed by getSupportedExtensions in"
       + " non-chrome contexts");
    var ext = gl.getExtension("WEBGL_debug_renderer_info");
    ok(!ext,
       "WEBGL_debug_renderer_info should not be available through getExtension in"
       + " non-chrome contexts");

    ok(!gl.getParameter(UNMASKED_VENDOR_WEBGL) && gl.getError() == gl.INVALID_ENUM,
        "Should not be able to query UNMASKED_VENDOR_WEBGL if enabling"
        + " WEBGL_debug_renderer_info failed");
    ok(!gl.getParameter(UNMASKED_RENDERER_WEBGL) && gl.getError() == gl.INVALID_ENUM,
        "Should not be able to query UNMASKED_RENDERER_WEBGL if enabling"
        + " WEBGL_debug_renderer_info failed");

  }
  window.postMessage({allTestsFinished: true}, "*");
}

</script>
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